CN202540767U

CN202540767U - Tread feeding frame

Info

Publication number: CN202540767U
Application number: CN2011205701921U
Authority: CN
Inventors: 王延书; 秦昌峰; 周庆武; 袁振
Original assignee: Mesnac Co Ltd
Current assignee: Mesnac Co Ltd
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-11-21
Anticipated expiration: 2021-12-31

Abstract

The utility model discloses a tread feeding framewhich is capable of satisfying requirements of a tread material on both center fixing and length fixing, wherein in a cutting process, the cutter slides on a sliding rail of a cutter holder through a driving mechanism; and the tread is cut off by the cutter in a shoving manner when the cutter slides downwards. The cutter holder of the feeding frame is fixed on side frames at the two sides of a delivering template and is provided with the sliding rail; a certain included angle is formed by the sliding rail and a delivering direction of the tread; and the cutter is in sliding connection with the sliding rail. According to the tread feeding frame, aninfluence on the center fixing which is generated in the cutting process, as well as an influence of an error of the length fixing on the uniformity of the tire, is eliminated, thereby effectively controlling the quality of fitting the tread.

Description

Tread feeding frame

Technical Field

The utility model relates to a be applied to tread feed frame of tire manufacturing belongs to rubber machinery.

Background

At present, in the manufacturing process of all-steel radial and semi-steel car tires, a tread needs to be transferred onto a belt layer fitting drum to realize the fitting of the tread and the belt layer.

The tire tread feeding frame has the function of conveying and attaching the coiled tire tread on the spool to the belt ply drum, and mainly meets the following two requirements: 1. centering, requiring the center of the tread to circumferentially coincide with the centerline of the belt drum; 2. the fixed length requires that the tread of automatic deciding will be completely laminated on belted layer drum, and the winding round, length just in time dock to reach the automatic joint through compression roller pressfitting realization unmanned operation.

The tread is derived and is got into at first can be well in the heart after the feed frame, makes the central line of tread and belted layer drum central line align in order to guarantee laminating quality, nevertheless behind cutting device, because the mode is transversely decided to the adoption usually at present, often can make well tread after centering take place the skew, and the tread can not be in the intermediate position when laminating on the drum like this, influences the fashioned quality of tire.

In addition, the length of the tire tread cut by the length measuring device and the cutting device in a fixed length mode may have errors with a system preset value, so that when the tire tread is wound on a belt drum, the end parts of the tire tread cannot be in perfect butt joint, and the uniformity of the tire is affected.

Therefore, how to eliminate the influence on centering during cutting and simultaneously eliminate the influence on the uniformity of the tire by the fixed length error in the tread feeding process is a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

Tread feed frame, aim at solving above-mentioned defect and service problem, mainly adopt the shovel to cut and the device and the method of accurate length measurement, satisfy well centering and the fixed length requirement of child surface fabric simultaneously.

The utility model aims to realize the well centering of tread through automatic deviation correcting device to eliminate the influence well centering to the last step accuracy through the mode of shovel cutting, the quality of laminating of effective control tread.

The utility model discloses a another aim at can carry out the precision measurement to the tread total length after cutting, and the system is according to the actual measurement value, and the linear velocity of automatic adjustment tread conveyer belt and the rotatory linear velocity of belted layer drum make the tread after cutting evenly twine on the drum, realize the intact butt joint of its tip.

The utility model discloses a still lie in, well decide with the fixed length all through system automatic adjustment control, both improved the accuracy, removed on-the-spot manual operation's work load again, further improved production efficiency and degree of automation.

In order to achieve the design purpose, the tread feeding frame mainly has the following structural scheme:

the tire tread conveying device comprises a frame and a conveying template used for conveying a tire tread to a belt layer drum; wherein,

the conveying template comprises two side frames, a conveying belt, and an automatic deviation correcting mechanism, a cutting mechanism, a length measuring mechanism and a laminating compression roller mechanism which are sequentially arranged between the two side frames along the conveying direction of the tire tread,

the cutting mechanism comprises a knife rest, a cut-off knife, a pressing plate and a driving mechanism, wherein the knife rest is fixed on the frames at the two sides of the conveying template, and is provided with a sliding track, which is characterized in that:

the sliding track and the conveying direction of the tread form an included angle; the cut-off knife is positioned above the vertical direction of the conveying template and is in sliding connection with the sliding track through the driving mechanism.

The included angle is equal to the angle between the section of the cut tread and the plane of the conveying template, namely the cutting angle of the tread required by the production process.

As described above, the cutter is configured to cut the tread by applying the cutter to the tread surface in a form of a shovel when the cutter slides down on the slide rail. Because the cutting edge of the cutter is perpendicular to the longitudinal central line of the tread when the cutter is used for shoveling and cutting, the acting force for causing the tread to generate transverse displacement can not be generated, thereby ensuring that the tread can not generate transverse offset when cutting.

The utility model discloses still can take following improvement scheme:

the tool rest comprises a fixed support and a swinging support, the fixed support is arranged on the frames at two sides of the conveying template, the sliding tracks are positioned on two swinging arms of the swinging tool rest, and the lower ends of the two swinging arms are respectively pivoted with two vertical plates on the fixed support.

In order to the contained angle value between the swing arm on the accurate control swing support and the tread place plane, control the contained angle value of the sliding track of cut-off knife on the track that slides promptly with the tread to realize the requirement of different production technologies to tread cutting angle, the utility model discloses following improvement scheme still can be taken:

and the fixed support is provided with a scale plate for calibrating an included angle between planes of the sliding track and the tread.

In order to realize the automatic cutting of the tire tread, the utility model discloses still can take following improvement scheme:

the cutting knife is an ultrasonic knife or a hot knife, a connecting plate is arranged at the end part of the cutting knife, and the connecting plate is connected with the sliding track through a sliding groove arranged on the connecting plate.

The driving mechanism comprises a driving motor, the output end of the driving mechanism is connected with a lead screw, the lead screw and the driving motor synchronously rotate, the other end of the lead screw is connected with a nut, and the nut is fixed on the connecting plate.

The cut-off knife realizes the sliding along the sliding track under the pushing of the lead screw driven by the servo motor.

In summary, the tire tread feeding frame and the feeding method thereof have the following advantages:

1. the shovel type cutting eliminates the influence of the cutting process on accurate centering, and effectively controls the tire tread fitting quality.

2. The cutting direction of the cutting knife can be accurately controlled and adjusted according to different process requirements.

3. Can the actual length of accurate measurement deciding the tread to adjust the speed of conveyer belt and drum according to actual measurement value, make the even winding of tread on the drum, improved the homogeneity of tire.

4. The whole process is automatically controlled by the system, so that the accuracy is improved, the labor load of field manual operation is relieved, and the production efficiency and the automation degree are further improved.

Drawings

The present invention will now be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the tread feeding rack of the present invention

FIG. 2 is a schematic structural view of the cutting device of the present invention

FIG. 3 is a schematic structural diagram of an automatic deviation rectifying device

Figure 4 is the structure schematic diagram of laminating compression roller device

As shown in fig. 1-4, a frame 1, a conveying template 2, two side frames 3, an automatic deviation correcting mechanism 4, a cutting mechanism 5, a length measuring mechanism 6, a laminating compression roller mechanism 7 and a conveying belt 8;

the device comprises a fixed support 51, a swing support 52, a swing arm 53, a vertical plate 54, a cutter 55, an ultrasonic generator 56, a connecting plate 57, a sliding track 58, a servo motor 59, a lead screw 510, a nut 511, a supporting beam 512, a scale plate 513, a bolt 514, a pressing sheet 515, a backing plate 516, a bottom plate 517 and a pivot shaft 518;

a photoelectric switch 61;

a camera 41, a transverse moving roller 42 and a swinging roller 43;

a toothed roller 71, a center press roller 72, a multi-plate press roller 73, a center press roller cylinder 74, a swing press roller cylinder 75

Detailed Description

Embodiment 1, as shown in fig. 1, tire tread feed frame, including frame 1 that plays basic fixed stay effect to and be used for carrying the tread to the transport template 2 on the belted layer drum, wherein carry template 2 including both sides limit frame 3, conveyer belt 8 and along the automatic mechanism 4 of rectifying, cut mechanism 5, length measuring mechanism 6, laminating compression roller mechanism 7 that sets gradually of tread direction of delivery between both sides limit frame 3, conveyer belt 8 is the hold-in range through servo motor drive.

As shown in fig. 2, the cutting mechanism 5 includes a fixed bracket 51 and a swing bracket 52, and the fixed bracket 51 is fixed to the two side frames 3 of the conveying template 2 by the bottom plates 517 on the two sides. The swing arms 53 are disposed on two sides of the swing frame 52, and the lower ends of the swing arms 53 are pivotally connected to the two bottom plates 517 on the fixed frame 51, so that the swing arms can rotate around the pivot shaft 518 as an axis. The bottom plate 517 is provided with a scale plate 513, an included angle between the swing arm 53 and the bottom plate 517 can be set through an angle value calibrated on the scale plate, and the included angle can be fixed through a bolt 514 after being set.

The swing frame 52 is further provided with two sliding rails 58, which are parallel to the swing arms 53. The cutter 55 is a shovel-shaped ultrasonic knife, an ultrasonic generator 56 is arranged behind the cutter, a connecting plate 57 is fixed on the ultrasonic generator 56, and the connecting plate 57 is connected with a sliding track 58 through a sliding groove arranged on the connecting plate 57. The connecting plate 57 is further provided with a nut 511, and under the thrust of a lead screw 510 driven by a servo motor 59, the connecting plate 57 can slide on the sliding rail 58, so as to drive the cutting knife 55 to move along the direction of the sliding rail 58. Since the sliding track 58 is parallel to the swing arm 53, the angle between the swing arm 53 and the bottom plate 517 is the cutting direction of the cutter 55.

As shown in FIG. 3, the automatic deviation rectifying mechanism 4 comprises a camera 41, a transverse moving roller 42 and a swinging roller 43, wherein the transverse roller 22 can move transversely along the axis thereof, and the swinging roller 23 can swing up and down.

As shown in fig. 4, the laminating roller mechanism 7 includes a toothed roller 71, a central roller 72, a plurality of rollers 73, a central roller driving cylinder 74, and a plurality of roller driving cylinders 75, wherein the central roller 72 is connected to the cylinder 74 and can swing up and down under the driving of the cylinder 74, and the plurality of rollers 73 are connected to the cylinder 75 and can swing up and down under the driving of the cylinder 75. The multi-piece pressing roller 73 is formed by combining a plurality of annular pieces, the annular pieces can be divided into a plurality of areas, when the multi-piece pressing roller 73 presses the tire surface wound on the belt drum, the system can control and set the pressure value of each subarea, different pressures of different subareas are realized, and the pressing precision is ensured.

The tire tread feeding frame exemplified in the embodiment is applied, and the specific feeding method is as follows:

the tire tread is guided by the guide device and then firstly enters the automatic deviation rectifying mechanism 4, the edge of the material is detected by the camera 41, if deviation occurs, the transverse moving roller 42 can drag the tire tread to move towards the corresponding direction, when the transverse moving roller 42 reaches the limit, the swinging roller 43 swings upwards to separate the tire tread from the transverse moving roller 42, at the moment, the transverse moving roller 43 resets, then the roller 43 swings downwards to reset, so that the tire tread contacts with the roller 42 again, and the next deviation rectifying cycle is started.

The accurately centered tread continues to move forwards under the action of the conveyer belt 8, when the accurately centered tread passes through the photoelectric switch 61 in the length measuring mechanism 6, the photoelectric switch 61 is turned on and starts to measure the length of the passed tread, and when a preset value L1 is reached, the length measuring mechanism transmits a signal to a control system, and the control system sends a cutting instruction. At this time, the driving motor 59 in the cutting mechanism 5 starts to drive the lead screw 510, and pushes the cutter 55 to perform a cutting movement of a cutting type downward along the slide rail 58, thereby cutting the tread. The pressing sheet 515 moves downwards under the driving of the air cylinder before cutting, presses the tread on the backing plate 516, and prevents the tread from moving longitudinally under the cutting force during cutting.

After cutting, the cutter 55 slides upwards under the action of the driving motor 59 to reset, the cut tread is conveyed forwards continuously, and the length measuring mechanism 6 continuously measures the length of the passing tread. When the tread completely passes through the length measuring mechanism 6, the photoelectric switch 61 is turned off, the length measuring mechanism transmits the measured actual length value of the tread to the control system, and the control system compares the actual measured value S with the preset value L.

When S < L, the system can reduce the speed of the conveyer belt, and the tread can be uniformly elongated when being attached to the drum, so that the end parts are completely butted; and when S is greater than L, the system can increase the speed of the conveying belt, and the tire tread can be uniformly compressed when being attached to the drum, so that the end parts are perfectly butted.

When the tread runs to the tail end of the conveyer belt 8, the end part of the conveying template 2 and the belt ply drum form an upper attaching state, and the tread is uniformly wound on the belt ply drum under the conveying of the conveyer belt and the rotation of the belt ply drum. When the tire is just wound, the center press roller 72 and the plurality of press rollers 73 are driven by the air cylinder to swing downward and press the tire tread. The tread is attached to the drum by a plurality of pressure rollers 73 during winding, and the tread is pre-stitched by a central pressure roller located at the rear end of the central pressure roller. And finally, the central pressing roller 72 and the plurality of pressing rollers 73 are driven by the air cylinder to swing upwards for resetting, and the whole process is finished.

When the actual length of the tread is smaller than the preset length of the system, the tread can be uniformly elongated when being attached on the drum, at the moment, in order to prevent the tread on the conveying belt from slipping due to tension, the tail end of the conveying template is provided with a toothed roller 71, and the toothed roller presses the tread in the forward conveying process of the tread.

As described above, the present embodiment has been described only in terms of the preferred embodiments of the present invention with reference to the accompanying drawings. Other alternative structures according to the design concept of the present invention can be derived directly from the teaching of those skilled in the art, and other structural features obtained thereby shall also fall within the scope of the solution of the present invention.

Claims

1. A tread feeding frame comprises a frame (1) and a conveying template (2) used for conveying a tread to a belt layer drum; wherein,

the conveying template (2) comprises two side frames (3), a conveying belt (8), and an automatic deviation rectifying mechanism (4), a cutting mechanism (5), a length measuring mechanism (6) and a laminating press roll mechanism (7) which are sequentially arranged between the two side frames along the tread conveying direction,

cutting mechanism (5) include knife rest, cut-off knife (55), preforming (515), actuating mechanism, the knife rest is fixed on carrying both sides frame (3) of template, is equipped with glide track (58) on it, its characterized in that:

the sliding track (58) forms an included angle with the conveying direction of the tread; the cut-off knife (55) is in sliding connection with the sliding track (58) through a driving mechanism.

2. The tread feeder frame of claim 1, wherein: the tool rest comprises a fixed support (51) and a swinging support (52), the fixed support (51) is set on the frames (3) at two sides of the conveying template, the sliding track (58) is positioned on two swinging arms (53) of the swinging support (52), and the lower ends of the two swinging arms (53) are respectively pivoted with two vertical plates (54) on the fixed support (51).

3. The tread feeder frame of claim 2, wherein: and the fixed support (51) is provided with a scale plate (513) for calibrating the included angle between the plane where the sliding track (58) and the tread are located.

4. The tread feeder frame of claim 1, wherein: the cutting knife (55) is an ultrasonic knife or a hot knife, a connecting plate (57) is arranged at the end part of the cutting knife (55), and the connecting plate (57) is connected with the sliding track (58) through a sliding groove arranged on the connecting plate.

5. The tread feeder frame of claim 4, wherein: the driving mechanism comprises a servo motor (59), the output end of the servo motor is connected with a lead screw (510), the lead screw (510) and the servo motor (59) rotate synchronously, the other end of the lead screw (510) is connected with a nut (511), and the nut (511) is fixed on the connecting plate (57).